Q: iMac goes to Deep Sleep over night. Why?
Hi,
I bought a new iMac few weeks ago. It's 21" basic configuration, late 2012. Now it suddenly started to go to Deep Sleep over night - I put it to normal Sleep Mode in the evening but every morning I see the progress bar down there and it takes much longer time than usual wake up. I might have changed something but I don't know what. 2 days ago it was alright. Can you please tell me what caused this and how can I put it back.
Thanks very much in advance.
Best Regards
Milan
iMac, OS X Mountain Lion (10.8.3)
Posted on Mar 29, 2013 11:14 PM
I've just found out what is it. This is from: http://support.apple.com/kb/HT1757
"With the release of the OS X Mountain Lion v10.8.2 supplemental update 2.0, a new feature was introduced to enter safe sleep after four hours of the computer being connected to AC power. This is an effort to comply with the European Energy Standards (ErP Lot6). This will only occur if there is no wireless or Ethernet activity and no activity from external devices such as USB storage devices."
Posted on Mar 30, 2013 12:31 PM